Kaspersky Lab publishes information on newly identified vulnerabilities in order to raise user awareness of the IT security threats detected. Kaspersky Lab does not make any guarantees in respect of information received from vendors of products in which vulnerabilities have been identified, which is included in the following sections of the advisory: Affected Products, Vendor Mitigation.
| KL-IDS | KLCERT-18-026 |
| CVE-IDS | CVE-2018-6307 |
| Publication date | 2018.12.19 |
| Researcher | Pavel Cheremushkin, Kaspersky Lab ICS CERT |
| Description | LibVNC before commit ca2a5ac02fbbadd0a21fabba779c1ea69173d10b contains a heap use-after-free vulnerability in the server code of the file transfer extension, which can result in remote code execution. This attack appears to be exploitable via network connectivity. This vulnerability has been fixed in ca2a5ac02fbbadd0a21fabba779c1ea69173d10b and later. |
| Impact | Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code. |
| Severity | |
| CVSS v3 Base Score: | 10.0 |
| Vector | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
| Exploitability | Remotely |
| Difficulty | Low |
| User interaction | None |
| Existence of exploit | Unknown |
| Affected products | |
| Affected products | LibVNC before commit ca2a5ac02fbbadd0a21fabba779c1ea69173d10b |
| Mitigation | |
| Vendor mitigation | Update LibVNC to 0.9.12 |
| Timeline | Aug 2018 – Vulnerability reported Oct 2018 – Vendor releases patch Dec 2018 – Advisory published |